12221502503 has 4 divisors (see below), whose sum is σ = 13967431440. Its totient is φ = 10475573568.

The previous prime is 12221502493. The next prime is 12221502529. The reversal of 12221502503 is 30520512221.

12221502503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30520512221 = 4001 ⋅7628221.

It is a cyclic number.

It is not a de Polignac number, because 12221502503 - 2¹⁶ = 12221436967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221502533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872964458 + ... + 872964471.

It is an arithmetic number, because the mean of its divisors is an integer number (3491857860).

Almost surely, 2^12221502503 is an apocalyptic number.

12221502503 is a deficient number, since it is larger than the sum of its proper divisors (1745928937).

12221502503 is an equidigital number, since it uses as much as digits as its factorization.

12221502503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745928936.

The product of its (nonzero) digits is 1200, while the sum is 23.

The spelling of 12221502503 in words is "twelve billion, two hundred twenty-one million, five hundred two thousand, five hundred three".